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UserspaceEmulator: Convert backing storage from malloc to mmap

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This saves a few bytes for each guest-mmaped region, especially since these are likely to be page-aligned.
This commit is contained in:
Ben Wiederhake 2021-03-07 21:39:06 +01:00 • committed by Andreas Kling
parent 968ad0f8d1
commit 7cc8f20a30
3 changed files with 28 additions and 16 deletions
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Userland/DevTools/UserspaceEmulator/SoftMMU.h
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@ -57,7 +57,7 @@ public:
if (address.selector() == 0x2b)
return m_tls_region.ptr();
size_t page_index = (address.offset() & ~(PAGE_SIZE - 1)) / PAGE_SIZE;
size_t page_index = address.offset() / PAGE_SIZE;
return m_page_to_region_map[page_index];
}